England 206-9 (Duckett 71, Livingstone 45, Forde 3-29)
West Indies 191-6 (Carty 50, Athanaze 45, Jacks 3-22)
Result West Indies won by four wickets (DLS method)
Barbados: West Indies got over the line in a nervy chase to beat England by four wickets on the Duckworth-Lewis-Stern method in a rain-shortened third one-day international in Barbados.
When play began two hours later than scheduled, seamer Matthew Forde quickly took three wickets on his international debut as England collapsed to 49-5.
Ben Duckett made 71 to help England recover and post 206-9 from 40 overs after another rain delay.
A further downpour left West Indies with a revised target of 188 from 34 overs and they looked on course for a comfortable victory thanks to a composed half-century from Keacy Carty.
However, England hit back to set up a tense finale with Will Jacks taking 3-22 as the spinners did the damage.
The game looked to be going down to the wire but one expensive over from the previously impressive Gus Atkinson swung the game decisively in West Indies' favour and Romario Shepherd, who finished unbeaten on 41 from 28 balls, sealed the win with 14 balls to spare.
West Indies took the ODI series 2-1 and can celebrate a first home series win over England in the format since 1998.
The two sides will now prepare for the five-match T20 series that begins on Tuesday, also in Barbados.